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Questions tagged [gridgain]

GridGain is a High Performance In-Memory Platform that enables processing of terabytes of data, in-memory, on 1000s of computers, in less than a second. (Source GridGain.com)

GridGain In-Memory Data Fabric is Java-based middleware for in-memory processing of big data in a distributed environment. It is based on high performance in-memory data platform that integrates world’s fastest MapReduce implementation with In-Memory Data Grid technology delivering easy to use and easy to scale software. Using GridGain you can process terabytes of data, on 1000s of nodes in under a second.

GridGain typically resides between business, analytics or BI applications and long term data storage such as RDBMS (e.g. Oracle, MySQL, etc), ERP, or Hadoop HDFS, and provides in-memory data platform for high performance, low latency data processing and computations.

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Can not start GG node (rev 6) in Windows 7 (works fine for rev 5.3.3)

C:...\GitHub\gridgain>bin\ggstart.bat Error: Could not find or load main class org.gridgain.grid.startup.cmdline.GridC ommandLineTransformer Error: Could not find or load main class…
Val K
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Where is org.gridgain.grid.util.ConcurrentHashMap8 located in Gridgain 6.0

I am using Gridgain 6.0 and trying to run the Gridgain Compute Application in the Get Started tutorial. I got a ClassNotFoundException, complaining that org.gridgain.grid.util.ConcurrentHashMap8 cannot be found. Where is the class located?
Mike Zhou
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Are GridCacheQueue elements also GridCacheElements?

I'm in the process of evaluating GridGain and have read and re-read all the documentation I could find. While much of it is very thorough, you can tell that it's mostly written by the developers. It would be great if there were a reference book…
SDI
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Unable to get response from grid gain on jenkins while unlocking the nodes

While running jobs thorugh jenkins server, which basically sending request to one of the grid gain node for tests execution. The tests gets executed successfully, but when its trying to unlock the nodes it gets hanged. Its not getting respons from…
user3414011
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JConsole/VisualVM Failed To connect to GridGain node With IOException

When I connect to GridGain node using JConsole or VisualVM, I get IOException. How to overcome this?
gridgain
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GridGain cannot bind to any port on Linux

I get an exception like the one below: Caused By: >>> Type: java.io.IOException >>> Message: Function not implemented >>> Stack trace: >>> at sun.nio.ch.EPollArrayWrapper.epollCreate(EPollArrayWrapper.java:1) >>> at…
gridgain
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IP Multicast Is Not Working in GridGain

GridGain nodes do not discover each other if I use GridTcpDiscoveryMulticastIpFinder, which is default. How to set it up?
gridgain
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Failed to allocate shared memory segment on Mac OS in GridGain

When running GridGain nodes on different Linux/Unix versions I get Failed to allocate shared memory segment errors. How to fix it?
gridgain
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GridGain. Local node's library list differs from remote node's, leveldbjni-all-1.1.jar

When I try to use gridGain on one machine, I run a ggstart.bat and run app on eclipse, I added all .jar files from gridGain sourсe folder, but I see on console this when start: Local node's library list differs from remote…
Kwent
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TCP handshake fails

I'm trying to connect 500 nodes on gridgain 2.1.1. and Windows Server 2008 R2 standard, but the topology recognizes only 100 nodes or so with the following errors. Any suggestions? 13/04/16 19:01:01.472 [INFO ] [main] [***GridTcpCommunicationSpi]…
Hiroaki Machida
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need clarity implementing interface GridTask

I need clarity in implementing reduce() and map() methods of GridTask, How can we Pass arguments to these methods, Map map(List subgrid, T arg) throws GridException R reduce(List results)…
Sravan U
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What are the suitable problems for Akka vs Gridgain? When is one more suitable than the other?

I am trying to understand the differences between Akka and Gridgain. Please explain when one is more suitable than the other and for what problems? http://akka.io/ http://www.gridgain.com/
Phil
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How do i add remote nodes to the gridgain?

I am a newbie to Gridgain and i would like to know how do i add remote nodes to a program. is there some configuration file. i dont see a clear cut example anywhere in the guides. (the worst guide i've ever seen)
shahalpk
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Gridgain executor service

What are the advantages of using GridGain's GridExecutorService to execute jobs remotely vs using the @Gridify annotation? You can pass an instance of java.lang.concurrent.ExecutorService to your class and have no dependency on the grid framework…
parkr
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Replacing HBase caching with a separate Caching product

Can the caching mechanism used in HBase be replaced with a different Caching product such as Memcache, Gemfire, GridGain etc. ?
Skydragon
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